6.5-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thierry Reding treding@nvidia.com
[ Upstream commit f344675a34383ae26a8230f4b1cd99cbd0defebd ]
Set the 'TEGRA_BPMP_MESSAGE_RESET' bit in newly added 'flags' field of 'struct tegra_bpmp_message' to request for the reset of BPMP IPC channels. This is used along with the 'suspended' check in BPMP driver for handling early bandwidth requests due to the hotplug of CPU's during system resume before the driver gets resumed.
Fixes: f41e1442ac5b ("cpufreq: tegra194: add OPP support and set bandwidth") Co-developed-by: Sumit Gupta sumitg@nvidia.com Signed-off-by: Sumit Gupta sumitg@nvidia.com Acked-by: Krzysztof Kozlowski krzysztof.kozlowski@linaro.org Signed-off-by: Thierry Reding treding@nvidia.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/memory/tegra/tegra234.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/memory/tegra/tegra234.c b/drivers/memory/tegra/tegra234.c index 8fb83b39f5f5b..0952f1210b772 100644 --- a/drivers/memory/tegra/tegra234.c +++ b/drivers/memory/tegra/tegra234.c @@ -852,6 +852,10 @@ static int tegra234_mc_icc_set(struct icc_node *src, struct icc_node *dst) msg.rx.data = &bwmgr_resp; msg.rx.size = sizeof(bwmgr_resp);
+ if (pclient->bpmp_id >= TEGRA_ICC_BPMP_CPU_CLUSTER0 && + pclient->bpmp_id <= TEGRA_ICC_BPMP_CPU_CLUSTER2) + msg.flags = TEGRA_BPMP_MESSAGE_RESET; + ret = tegra_bpmp_transfer(mc->bpmp, &msg); if (ret < 0) { dev_err(mc->dev, "BPMP transfer failed: %d\n", ret);